Incubator-heater.



G. E. ADAIR.

INGUBATOR HEATER.

.APPLIGATIO'N FILED MAR. 11,

Emma Mar. 29, 1910.

CHARLES E. ADAIR, 0F BUFFALO, NEW YORK, ASSIGNOR TO OYPHERS INCUBA'I'OR COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

INCUBATOR-HEATER.

Specification of Eetters Patent.

Patented ar. 29, 1210.

Application filed March 11, 1908. Serial No. 420,493.

To all whom it may concern:

Be it known that I, CHARLES E. ADAIR, a citizen of the United States, and resident of Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Incubator-Heaters, of which. the following is a specification.

This invention relates to incubator heaters, and consists in the apparatus hereinafter described and claimed.

The object of the invention is to provide means for heating incubators, with means for accurately and automatically controlling such heating.

In the drawings: Figure 1 is a front elevation of an apparatus embodying this invention; Fig. 2 is a side elevation of the heater and certain adjuncts thereof; Fig. 3 is a horizontal section on the line 33 of Fig. 4, of a controlling device employed in connection withthe said invention; Fi 4 is a vertical section on the line 4-4: of Fig. 3; and Fig. 5 is an end view of a similar controlling device.

In the drawings, 1 is a heater, which may burn coal, gas, or other suitable fuel, and which heats the water contained in a circuit of pipes; 2 is the water supply tank for keeping the system full, and 3 and 4 are pipes leading from said water supply tank to connect wlth the heater and the fluid circulation system. Inside the heater 1, (but not shown) is suitable piping, as usual, that is connected by the supply pipes 5, 6, 7, with the incubators that are to be heated. Inside the incubators are suitable radiators, as will be wellunderstood by any one skilled in this art, and the water, after passing through said radiators, is led back to the heater bythe return pipes 8, 9. The

heater 1 causes circulation throughthe ra-' diators in the incubators, and the water, after having parted with some of its heat,

returns to the heater to be reheated. The

heater is provided with a draft damper 10, Fig. 2, controlling the supply of air to the space under the rate, and is also provided with a check drag; damper 11 controlling an opening in the smoke pipe 12. These two dampers are connected by rods or wires 13 to opposite ends of a balance beam 13, so

'that when one end rises and opens the draft damper 10, the check draft damper 11 will be c osed and the draft through, the grate will be increased. If the heat in the pipes increases, however, the draft damper 10 is automatically closed, and the check draft damper 11 is opened, thus checking the fire. The beam 13 is actuated by a thermostatic regulator that is set in the delivery pipe 6, so that the temperature of the water in said" pipes determines the movement of said beam.

In the supply pipe 6, at a suitable point, for the purposes just described, adjacent to the heater 1, is a casing 14 (Fig. 3) through which the water of the system passes. Within said casing is a closed compartment containing the thermostat, to which compartment the water of the system has no access. This is produced by the wall 15, leaving the annular water channel 16 outside the same. The wall 15 is cylindrical in the present form of the device, and is quite thm, and within the water tight chamber formed by it is a thermostatic, motor part, which, in the present instance, consists of a pair of hermetically sealed capsules 17 containing some volatile fluid, such as ether. The said capsules are well known in this art, and are made of corrugated, convex, circular shells, fastened together at their peripheries. Two of these capsules are fastened together at their central points of contact, and the lower one has a bearing on the bottom of the thermostat chamber 18. The upper capsule bears a rod 19 that ames through a hole 20 in the to of the c amber 18, and is connected with the beam 13 at one side of its pivotal bearings 21. When the temperature of the water in the system changes, the capsules 17 expand or contract, the rod 19 is ,checked or increased, as conditions require.

A second regulator is also provided, actuated by a similar thermostatic arrangement set in the supply pi e 6 adjacent to the incubators, and this 1: ermostatic device is of such character that in consequence of changes in the temperature of the water at this point it makes and breaks electric circuits, by which an electric motor is controlled, and valves in the delivery and return pipes are opened or closed by the motor, as the case may be. The same re ator above described may be used for thls purpose, and the tilting beam may be employed in an obvious manner to make one circuit when the beam is raised, and another cirmotor revolves in an opposite direction.

In the supply pipe 6 is a valve 28, in the return pipe 8 is a valve 29, and, if desired, in the connections 3 and 4 from the tank 2 are valves and 31. These valves are connected together in any suitable way, such as by the band or chain 32 passing around a series of pulleys 33, so that movement of the chain in either direction will operate all of the valves. The chain or band is actuated by the motor 25, and when the heat of the water in the system rises above the predetermined degree, the valves will be closed and the circulation of the water interrupted until radiation from the piping and radiators has reduced its temperature, whereupon the movement of the thermostat will cause the motor to revolve in the other direction and to open the valves and permit renewed movement of the water.

The circuits through the wires 23 and 24 are made and broken by the regulator 22 as follows :In the circulation pipe 6 is inserted a water-tight casing 34, Fig. 5, containing one or more capsules 34 arranged to move a rod 35, in the same manner as the capsules 17 operate the rod 19. The rod 35 projects upward and is pivoted to an arm 36 that is hung in trunnions 37. The arm 36 strikes one or the other of two contacts 38,

32, connected respectively with the wires 23, turn wire 26 through a binding post 41, the

casing 34 and the trunnions 37. When the fsule's 34 to lower the rod 35 and tilt the arm .36 in the opposite direction, so that the arm strikes the contact 39 and the circuit is made through the other winding of the motor which then rotates in the opposite direction and opens the valves again, whereupon the circulation of the heating water is resumed.

What I claim is:

In an incubator heating apparatus, a fluid circulating system including supply and return pipes, a heater for heating the fluid, regulators having their motor parts in the fluid of the system, a draft damper and a check draft damper for the heater controlled by a regulator adjacent to the heater, valves in the supply and return pipes, an electric motor for opening and closing said valves, a source of electricity, and a regulator having its motor parts in the supply pipe and having contacts and connections therefrom to said source of electricity and motor to actuate the motor for opening and closing its valves.

CHARLES E. ADATR.

W'itnesses:

ALBERT F. GEYER, J OHN P. ABBOTT.

The arm 36 is connected with the re-. 

